O'Chunks

From Paper Mario Wiki

O'Chunks is the first Mini-Boss that Mario faces in Super Paper Mario. He is the tough one of Count Bleck's minions. He is faced four times in the game. The first is in Chapter 1-3, Yold Desert the second is Chapter 5-2. In Chapter 5-4, Mario faces O'Cabbage which is him under the control of Dimentio. Bowser faces his final battle against Super O'Chunks in 8-1, which is his bigger form.

He fights by using ground pound, ramming you, and tossing you. He is faster as O'Cabbage. He is bigger and stronger as Super O'Chunks.